CVE-2026-61821Network attack vector

Unauthorized table relocation via privileged background worker

Published Sep 18, 2026 · Updated Sep 18, 2026

Missing authorization in pg_partman before 5.5.0 allows remote authenticated users to move retained child tables into unauthorized schemas. The retention functions accept any nonempty part_config.retention_schema value, and the worker executes ALTER TABLE SET SCHEMA under its configured role. Exploitation requires partman_user access and a retention run by a more privileged background-worker role, enabling unauthorized relocation rather than SQL injection.

CVSS severity8.5
High
EPSS probability0.38%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Missing authorization in pg_partman before 5.5.0 allows remote authenticated users to move retained child tables into unauthorized schemas. The retention functions accept any nonempty part_config.retention_schema value, and the worker executes ALTER TABLE SET SCHEMA under its configured role. Exploitation requires partman_user access and a retention run by a more privileged background-worker role, enabling unauthorized relocation rather than SQL injection.

The record

CVE
CVE-2026-61821
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
pgpartman
Product
pg_partman
Classifications
CWE-862, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 5.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

pgpartman · pg_partmanversion=< 5.5.0

Published CVSS scores

8.5GitHub CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started